Tickets
14251
and
14280
show Leif Astrand hard at work looking for the cause of an Atmosphere error generated when a UI detaches. In case it helps, a bit of log data.
I receive a handful of these each day. Some UIs detach without generating the error. There is no impact on the user. I’m using Chrome rather than Firefox and not using @PreserveOnRefresh.
Vaadin 7.2.6, Tomcat 8.0.9, Java 8u11, latest Chrome, manual push.
Aug 02, 2014 11:48:41 AM com.vaadin.server.communication.PushHandler onThrowable
SEVERE: Exception in push connection
java.io.IOException: AtmosphereResource Cancelled: 08ea4dd0-deda-4f93-8b48-3dd968118582
at org.atmosphere.cpr.AtmosphereResponse.validAsyncIOWriter(AtmosphereResponse.java:459)
at org.atmosphere.cpr.AtmosphereResponse.access$1100(AtmosphereResponse.java:55)
at org.atmosphere.cpr.AtmosphereResponse$2.write(AtmosphereResponse.java:499)
at org.atmosphere.handler.AbstractReflectorAtmosphereHandler.onStateChange(AbstractReflectorAtmosphereHandler.java:141)
at com.vaadin.server.communication.PushHandler$1.onStateChange(PushHandler.java:63)
at org.atmosphere.cpr.DefaultBroadcaster.invokeOnStateChange(DefaultBroadcaster.java:1018)
at org.atmosphere.cpr.DefaultBroadcaster.prepareInvokeOnStateChange(DefaultBroadcaster.java:1038)
at org.atmosphere.cpr.DefaultBroadcaster.executeAsyncWrite(DefaultBroadcaster.java:879)
at org.atmosphere.cpr.DefaultBroadcaster$3.run(DefaultBroadcaster.java:520)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Aug 02, 2014 11:48:41 AM com.vaadin.server.communication.PushHandler disconnect
INFO: No UI was found based on data in the request, but a slower lookup based on the AtmosphereResource succeeded. See http://dev.vaadin.com/ticket/14251 for more details.
Aug 02, 2014 1:12:43 PM com.vaadin.server.communication.PushHandler onThrowable
SEVERE: Exception in push connection
java.io.IOException: AtmosphereResource Cancelled: 83412983-9c02-4903-a4c8-22cecd7d5791
at org.atmosphere.cpr.AtmosphereResponse.validAsyncIOWriter(AtmosphereResponse.java:459)
at org.atmosphere.cpr.AtmosphereResponse.access$1100(AtmosphereResponse.java:55)
at org.atmosphere.cpr.AtmosphereResponse$2.write(AtmosphereResponse.java:499)
at org.atmosphere.handler.AbstractReflectorAtmosphereHandler.onStateChange(AbstractReflectorAtmosphereHandler.java:141)
at com.vaadin.server.communication.PushHandler$1.onStateChange(PushHandler.java:63)
at org.atmosphere.cpr.DefaultBroadcaster.invokeOnStateChange(DefaultBroadcaster.java:1018)
at org.atmosphere.cpr.DefaultBroadcaster.prepareInvokeOnStateChange(DefaultBroadcaster.java:1038)
at org.atmosphere.cpr.DefaultBroadcaster.executeAsyncWrite(DefaultBroadcaster.java:879)
at org.atmosphere.cpr.DefaultBroadcaster$3.run(DefaultBroadcaster.java:520)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Aug 02, 2014 1:12:44 PM com.vaadin.server.communication.PushHandler disconnect
SEVERE: Could not get UI. This should never happen, except when reloading in Firefox - see http://dev.vaadin.com/ticket/14251.